Combined type-writing and computing machine.



W. WRIGHT. comamenrwe WRITING AND COMPUTING MACHINE,

APPLICATION FILED .IANL}, I912.

Patented Mar. 19, 191 8.

2 SHYEETS-SHEET I.

WIT

iNVENTOR:'

w. WRIGHT. COMBINED TYPE WRITING AND COMPUTING MACHINE.

0% 1 9 11 qw 11 R a M. d m n [W a P 9 m a m M. m W 1 0 7 9 5 2 1 2 SHEETS-SHEET 2- gmvE om' "oniirnii srATns PATENT OFFICE.

WALTER WRIGHT, OF NEW YORK, N. Y., ASSIGNOR T0 UNDERWOQDQQMPU'I'INGMACHINE COMPANY, OF NEW N. Y.,

A COBPQRATION OF NEW YQRK.

COMBINED TYPE-WRITING AND COMPUTING IVIACHINE.

Specification of Letters Patent.

Patented Mar. 1.9 1 918,

Application filed January 4, 1912. Serial No. 669,346.

To aZZ it may concern:

Be it known that I, WALTER WRIGHT, a citizen of the Uni-ted States,residing in New York city, in the county of New York and State of NewYork, have invented certain new and useful Improvements in combinedType-Writing and Gmnput-ing Mzichines, of which the following is'aspecifics tion.

This invention ielzites to *9 new and improved key controlled correctionmechanism which may he used in connection with -a combined typewritingand computing mechine of the UnderWoothWright typemnd is an improvementon the application of Wright and Degener, 'N'o. '543 ,603,-'fi1edFobru'ary 12, 1910, -"(now Patent No. 1,237,008, dated August 14, 1917,)and myepplieations No. 660,392, filed November 15, :l91i1,,and No.663,216, filed December 1, 1911, ow Patents Nos. 1,245,300 'and1,245,30Ld ted November 6, 191:7).

In "my above-mentioned application No. 663,216, I have shown how thestatemf "a plurality of eomputingih'endm-as to the'charactor ofcomputation carried on lthereby, can he changed simultaneously totemporarily reverse their individual operations Without inte'rforing'With their individual control ling-mechanism 5, 0 1 :Teversing'the'direction of drive thereto from "the motor. Means WZLSHlSO disclosed'Wherehy the back spacing 'key could concomitantly shift the carriage."back o-space and effect ithe-abovementioned reversal and "change'ofstate. lt i's'o'ften desirable to obtain "such w'ehange of state andreversal without -11 concomitant movement of the carriage, and. miscfrom a point most convenient -"to "the i operator.

A feature theieforeof fthis invention is the provision of keys Whosepurpose is *to effect a temporary end semi--pe1mancnt change of state ofone or uture comp-citing heztds'by ZKI'GVGISQII of 'the-di'rectiowofdrive from 'the motor-thereto.

A 'further featirre- -o'f fthis invention :-iiS" E-118 proi isi on'ofsi-l eneing' keys vt-ii-ir'ih: *act to: T8151- der one o'r more headsinoperative by interrooting dri vefrom" the -motor thereto.

These "feainires t me-y --be accomplished hy pro vidiiig for-eadh artli'e oompu'tiirg head individual controlling mechanism, which shiftsconcomitantly clutches controlling the drive and direction of drive ofboth the master Wheel and the tens-canrying mechanlsm. The gearingforldriving these clutches may be connected to the source of power :by atrain of gearing which includes a clutch for the gearing :driving themost-er wheels and a clutch 'for the gearing driving the tens-carlyingmechanism, which is shifitab'le to any one of three positionscorresponding to rotations of the master :Wheel :and -,tens carryingmechanisms :in two directions, and the -I1011-IOtltl0l1 of the masterWi'lBGlS and the tens carrying meohanisms and-the gearing *for drivingthe :same. These latter clutches are controlled bye-main-controllingmechanism Which is adapted 'to shift them simultaneously.

This "main --c0ntro'll ing mechanism may be operated from-anyone of fouri keys, two-o?t' which are for temporary adjustment and two forpermanent adjustment. l wo :of each ofthese pairsof keys shifttherclutches on the common or main drive from a. normal position, inwhich they are held b l -a. spring and which corresponds too rotation ofthegearing for driving-themaster-Wheels and 'tenscarryingmechanism inone-direction,='to such a position that thesegearingswilldrive'the-master wheels and tems earrying' mechanism to'f :thecomputing heads Whioh happen to -he-active in justthe oppositedirection. These keys may therefore be-calletl ieversing keys. The.other tworof the-pairs of keys will-shift the clinches-on, the main 01'common drive to an .intcrinedi ate point corresponding to thedisconnection' of: the vmester Wheel and :1 tens carrying gearing-s'from the main d rive, and thus-correspoii-ding to a, silencing Of allG$ tl16nCOmplitinq heads. Hcnoefi these f latter keys-may he ca liedsilencing keys. I

Gm-e of the-reversing keysi aud one of the silencing keys, afterhavingionce sheen depressed, are lookedrinithciridepressetl position byHatches, so that :the rreversal tor 1encing .:;cen .ibe :i-in efi'ecteuiitil these ,iatohe5 are releaseid, *Tfhese i latches, which thelocking means for rthe semi-enermenen silencing maid mevers mg vadmire,scan hex-1Z9.

leased by a depression of one of the tempo rary keys, for which purposeconnections are provided between these latter keys and the lockingmeans.

Other features and advantages will hereinafter appear.

In the accompanying drawings,

Figure 1 is a. side View in elevation with parts in section.

Fig. 2 is a diagrammatic perspective view, showin the connection betweenone of the numeral" reys' and-the valuating or escape-ment mechanism,whereby the extent of rotation of the master wheel is controlledaccording to the value of the particular nu' mera-l key struck.

Fig. 3-is a vertical section throughone of the computing heads. v

F ig. 4 is a skeleton perspective view, showing the connection betweenthe severaltemporary and permanent reversingand silencing keysand thecontrolling-mechanism for the main or. common drive between the mo: torand the gearing more nearly connected to the computing head.

Fig. 5 is a fragmentary view in side elevation,- showing the reversingmechanism for the main drive in its normal position.

,Fig. 6 is a vertical detail section, showing the means for shifting oneof the clutches.

Fig. 7 is adetail of the tens-carrying driving gearing. V

Fig. 8 is a detail, showing one of the permanent shifting keys, in thisinstance the reversing key, in its actuated and locked position.

Referring more particularly to the'separate parts of this invention asembodied in the form shown in the drawings, 1 indicates letter keys and2 numeral keys, which are secured to key levers 3, which operate throughthe intermediary of hell cranks 4, type bars 5, so as to swing thelatter up against the front side of a platen 6 carried by a carriage 7which runs on one or more rails 8. The letter-feeding movement of thecarriage 7 maybe obtained in the usualmanner step-by-step at eachactuation of a key by the release of an escapement mech-' anism,indicated generally by the numeral 9,'which may be of the usualUnderwood type.

The computing mechanism may be controlled from the numeral keys 2 in themanner described in application No. 543,603, wherein it was shown thateach numeral key lever 3 was adapted to pull down on a link 10, so as torock a bell crank 11, thereby pulling on a link 12 to swing a lever 13about 1ts pivot 14. The swinging of each of the levers 13, of whichthere is one for each numeral key, plunges a jack 15 against a Icorresponding pin 16 provided in a valuating wheel 17. The valuatingwheel 17 is normally held from rotation by one of the projected pins 16engaging an escapement wheel 18, which is secured to another escapementwheel 19 engaging one of a pair of locking stops 20 on a rock shaft 21.

The rock shaft 21 is oscillated at each actuation of a numeral key, soas to release the escapement wheels 18 and 19, and thus permit arotation of the valuating wheel 17 a predetermined amount, dependingupon the particular numeral key actuated, until the next projected pin16 engages the escapement wheel 18. The rocking of the shaft 21 may beaccomplished by a collar 150 being pushed back by each of the levers 13at the actuation of a numeral key against the tension of a spring 151,so as to oscillate a lever 152 which is connected by a link 158 to-anarm 154 on the shaft 21.

This mechanism, which may be termed the escapement or valuatingmechanism for the computing mechanism, determines the extent of rotationof a shaft 22, to which the valuating wheel 17 is secured, and which isprovided with a gear 23 meshing with a correspondinggear 28 on a shaft24. The shaft 24 is also provided with a bevel gear 25 meshing withbevel gears 26 and 27 se cured respectively to shafts 28 and 29. Theshaft 29 is driven from a motor 30 through the intermediary of a slipclutch not shown, and also through the intermediary of intermeshingbevel gears 31 and 32, the latter of which is (scared to the shaft 29.The shafts 28 and 2 form a portion of the gearing connecting thermotor30 with the gearing for driving the rotatable parts of one or morecomputing heads 33 and 3%, of which two are shown.

Each of the computing heads is preferably of the type shown inapplication No. 543,603 above-mentioned, and includes, as will be seenby reference to Fig. 3, a master wheel 35 splined on a shaft 36, so asto have a movement relative to a series of computing wheels 37, wherebyit will be capable of engaging with the internal gears 38 providcdby theinwardly projecting teeth of these computing wheels, thus enabling themaster wheel to successively actuate each of these computing wheels. Therelative movement of the master wheel and the com puting wheels may beobtained in any suitable manncr, as for example that described in myco-pending application No. 571,813, filed August 1, 1910, (now PatentNo. 1,244,398, dated October 23, 1917), whereby the master wheels aremanipulated step-bystep at each new column by a lever 105 provided withan automatic catch 100, which is engaged and operated by a series ofcolumn stops 101 carried by a rack 102 on the carriage 7 These computingwheels are also provided with external teeth forming external'gears 39meshing with the gears 40 carrying the dial wheels 11, so that theplurality :ef patches e7 number; which ere engegefl by vsprmg pale 1411I numeral GSJWhiChdl capable aei "eljxgwgi' described "in romtmn andnumerals merlced en the die]. wheelswill be exhibited *fhiYmflgh anopening 42 in the casing ef each computing head, there y s l'wwlng thepartlculam eomputahmi rum sup gear; indicated for the respective com-aputing heads the humemlsA-S and AM.

These bevel gears each mesh wlthepaer of bevel :gezurs ileosely mountedon agehe,

t 1&5 amid faced opposite directions, 150 eswto the pairs of bevel gearswhichEwredndi eted by the 11: merel's 46,917, 8e11c1 49, we;

reletiew'witih the shaft 45, were "We 1 Vided rclulfiehes 5:0 and 51splined mrtheehaf'b table t e (tense :the teeth provided en opgpoeilteends :theneef to cellgage to be eh rrespendiamg teeth on the Each oftheclutehee is led with circulargenome, :sei to be eaegagedby pine 52.arried by .shiiitin leverssfi and 35%. The sh'l'ftlnglevere 21:11,fieerehpl'voted ree tively m; 55 3 mid 56 by meensyof pine end; arecapable of eeeu'pyrw aene of A pesitions eerrespomding t0 rlhe 0: melien of each 0f the gears of a peer $111 vd1 lvmgre lemony-with: t1]eeheft 45,La nde1ee Wliih e11 time 0f :edajuetment, "they are providedWit neferebly iflthree 1m fientsefi.

50 that there will be are mi'breken 1 tween the meter and 111116 Emee35,1315; shaft 45 11378 iee'cm'ecijtheretee bevel gear 159, which mesheswith sitely facing bee {e1 16nd wllleeeGlgw mennted onthe 2-8, but c weefl be u 11g :z'ele, mm thereiwieh shaft "epilineder has teethen"epapesfl re ends the .eof

with mom teefih e11 "the in verdly fecingwiside 1 e 161E136]: 62, whicha 2 8, an

Km the type 0f eempu'ting ease Hf keemputing: heads v33 any! 134%,meepyeze mEeeh of the ehafifis 351501 xqhe eomputing heads .33 2mg}: 3%15 prov ded 1mm bevel the inmmu feelingwsidee (if; each ing levers 1 maytaken up by springs :82 and a enewseeured 101193 end toythe lemmaey;

heed \shemy hE'lQNIVlith T e1 tetra sfelma 00 603, on the cmtrespend 11Wmtmm of gearing, cLeseribeclfin epplli e time; Ne 34:3,603, andjil'ldicihiledi the numeral 65. Thebe vel igeei 1 \pcuofiee ins E 5 1'so es he: pem'ni t 111mm :motiioli etf @319 311119 plenuemtamy :leVeusrelative to "the main hifi This "limited m0 Counter vShEh heweimgear SS7meshing x v v 9ThfilS1-ll 2891051 hieh web 5 meme ngege t the clutch 93be shifted simultaneously, so

anisms of all of the computing heads. For

this purpose, a shifter 91 is providech'which is shown in the form of'arod slidingly mounted in bearings 95, and having a pair of arms 96 and97, which engage in circular grooves in the clutches 62 and 93.

The shifter '91 is normally held in the position" illustrated in Fig. 1by a spring 106. To manipulate the shifter 91 to a neutral or a reversedposition, there is pro vided a pin 107 on the rod of the shifter, whichengages a slot 108 in an arm 109 secured to a shaft 110. The shaft 110may be actuated from a shaft 111 throughthe intermediary of intermeshingfragmentary bevel gears 112, 113, fixed respectively on the shafts 110and 111. To rock the shaft 111, and thus manipulate the shifter 9-1,there are provided a plurality of keys 111, 115, 116 and 117. The keys1141 and 115 operate the shaft 111 by means'of a crank 118 thereon, andthe keys 116 and 117 operate said shaft 111 by a crank 119 thereon. Eachof'the keys 114C to 117 is pivoted intermediateits ends, as at 120, andcomprises the usual finger rests 121 and levers 122. All of these keysare provided adjacent their rear end with cam edges 123, ML. gaging pins124 and 125-located respectively on the cranks 118 and 119. These camedges, on an. actuation ofany one of the keys, are adapted to rock thecranks 11S and 119, and thus the shaft 111, until the pin'12-1 or 125enters into the particular slot 126 or 1270f the key' operated.

engaged with the pins 124 and 125. It will be further noted that theinclined cam edges 123 leading to the slots 1'26 and 127 are longer in.the case of the slots 127 than in the case of the slots 126, so that theshaft 111 will be rotated an appreciably greater theclutches 62 and 93to their opposite limit 7 of travel inengagement with the gears '60 and91. v

The keys 115 and 116, which are provided with the slots 126, merelyshift the clutches 62 and 93 to an intermediate or neutral positionwhich corresponds, with the disconnection or interruption of the drivefrom themotor to the actuating mechanism of the computing heads embodiedin the It will be noted that the slots 126 and 127 will lock theshaft111 against further rotation after they-have once master wheels and tenscarryingmechanis'ms. These keys are therefore called the silencing keysv The other keys 114 and 117, which are provided with the slots 127,will manipw late the shifter 91 to the extreme limit of its throw, so asto reverse the drive from the motor to the computing heads. These keysare hence called reversing keys.

The keys 114' and 115, after once being depressed, are automaticallyreturned to their. normal positions by springs 128. These keysare hencecalled temporary reversing and silencing keys. because their action ismerely in effect while the operator holds them in their depressedposition.

. The keys 116 and 117, however, when once depressed, are secured intheir de pressed positions by locking mechanism, which is shown in thisinstance to comprise pins 129 located on the sides of the key leverswhich are engaged by latches 130 secured to a rod131. These latches 130are normally held in position to engage the pins 129 by a spring 132.

If it is desired to disengagethelocking mechanism so as to releasewhichever one of the permanent or semi-permanent keys 116 and 117 whichhappen to have bee eprcssed, it is merely necessary to depress thecorresponding one of the temnorar kevs 114 and 115. when pins 133secured to the side of the levers for the keys 111 and 115 will engagecam edges 134 of arms 135 ecured to the rock shaft or rod 131. Themovement of oneof these kevs 114. and 115 will thus swing the latches130 from eng L'ement with the pins 129 on the key which happens to be dere sed, so that this kev mav be returned bv its spring 136, one of whichis provided for each of the permanent kcvs 116and 117.

In the operation of the device. if it is found necessary to reversetheaction of the machine without interfering with the inclividualcontrolling mechanism for the computing heads. that is. without shiftingthe of the numeral kevs should happen to be struck while this key isdepressed. such of the computing heads as happen to have their levers 53and 54 in their active position will be rotated in anopposite directionto: a normal one corresponding to the particular position oftheircontrolling levers.

-l/Vl1en the pressure on the key 114,-

is re 13!) Having thus descr ed my wing" 106 a i man'ent *0;semi-permanent fre- 1 vari t'ons may be i'esortgd f0 thin the claim: j

Tl-"The comblnatlon with 1 soufceiof power 513d said cohipuiiiiig Thecombination! with a plu i'alitjf of said drivmg C01 said driving (1011118660118 including be l mm b 3. combination w $111 a plural, lty 0flt ingh powepfor etween sa jlcl 6. The 1 combinamon wi h plufality ofsaid driving connections including a mem ber movable to differentpositions so as to reverse or interrupt the action of all of saidcomputing headsaccording to its positions, means normally tending tohold said memberin position to cause activity of said com,-

puting heads, means for temporarily positioning said member against thetendency of said holding means, so as to interrupt the action of all ofsaid computing heads, and means for moving and detaining said memberagainst the tendency of said holding means in position to interrupt theaction of all of said computing heads. 7 e

'8. The combination with a plurality of computing heads, or a source ofpower for said heads, driving connections between said source of powerand said computing heads, said driving connections including a membermovable to different positions so asto reverse or interrupt the actionof all of said computing heads according to its positions, means forpositioning said member so as to interrupt the action of all of saidcomput= 'ing heads, a second means for positioning said member so as tointerrupt the action of all of said computing heads, and means broughtintojaction on movement of said second-mentioned means, to'hold saidmember as positioned by either of said firstor econdanentioned means.

9. The combination with a plurality of computing heads, of a source ofpower, driving connections between said source of power and saidcomputing heads whereby certain parts of all of said computing heads maybe driven from said source of power, said driving connections havingmeans for interruption so as to concomitantly interrupt the actionof allof said computing heads which may be active, a key for interrupting thedriving connections so as to silence all of said computingheads, aspring normally tending to hold said connections active, and lockingmeans for holding said connectlons in interrupting position against thetension of said sprin I v 10. The combination with. a plurality ofcomputing heads, of a source of power,

driving connections between said'source of power and said computingheads whereby certain parts of all of said computing heads may be drivenfrom said source of power, said driving-connections having means forinterruption so as toconcomitantly interrupt the action of all of saidcomputing heads which may be active, a key'for interrupting the drivingconnections so as to'silence all of Said computing heads, a springnormally tending to hold said connections active, lockingmeans forholding said connections in interrupting position against the tension ofsaid spring, and means for releasing said locking means, said lockingmeans also controlling said connections.

11. The combination with a plurality of computing heads, of a sourceoi'power for said heads, driving connections between said source of powerand said computing heads, said driving connections including a membermovable to different positions so as to reverse or interrupt the actionof all otsaid computing heads according to its positions, and means formoving and detaining said member inposition to interrupt the action or Iall of said computing heads.

verse or interrupt the action of all of said computing heads accordingto its positions, means normally tending to hold said member in positionto cause activity of said com.- puting heads, means for temporarilypositionin said member against the action of said holding means so as tointerrupt the a'ctionof all of said computing heads, means to hold saidmember in a position to interrupt the action of all of said computingheads, and means brought into action by said tcmporaryqoositioning meansto render said last-mentioned holding means ineffective.

13. The combination with a plurality of computing heads, of a source ofpower, driving connections between said source of power and saidcomputing heads whereby certain parts of allot said computing heads maybe driven from said source of power, said driving, connections havmgmeans for reversal and interruption so as to concomitantly re verse orinterrupt the action of all of said verse or interrupt the action of allof said computing heads which may be active, means for normally holdingsaid connections with the parts thereof in a certain relation, means formanipulating said connections to vary the action thereof, and lockingmeans hold- 1 o eti n qf said e01 mea s b ing 1 meensbeing a ilocikingmeans. h

ing s i @qnnee ns ag ns ineqfonne 1:10.11 sees to eo cemltently terr ptthe a tinned hqld i e' means de thes vi l tipie m d um h a lminipule ng1mi computing heads, of a seurce of pee er, dIlVm l igfiflr e tl l be nseldiseurce ef pew r end said eompeimgheeds whereby certa n parts0132111 of said ce putiiigheeds may iweni rom i s u -emf powe fifllr d 1s hiw 'l g we i WWFFUP ifiuil ef hali Qffsiaid computing heads hig m Vbe alcti a spr i g 1101; i1 wen-d ng p0 1"5 ier effe e said dwihgeoneepjzmne be 116; The celnhinzieion with eempiiting heads, of awsoii rcefl aid heads; driwingconnections; eqmi'ce of power: and sziidcq npu'tingz (1 said di'iving 60 1111 QCtiG-HS inc immiehle @[10different positions, so ewe wee 01 interrupt the eetiohwef all of midcomputing heads according to ts PDSltlOHS,

means he- :held v Said member in: positionito cause one state ofactivity of said computing heads, and ineene to liiiove end iholdwsziidmember in pesitien t0 intermptflthe eetien efdalll of said computing:heads,

means beiiw e lecking means;

17. The cembiimtio i With e piui'z lifey of eemputing heads of 2iseureeuoi pewei' for; saiddieads, drivingiconnectieiibetween mid seur ceof ,pewerend said computing Ihfidflifii,

said idriiving connections including 3 11116111- her movable todifferent posi'tiens, s0 Yes to reverseor interrupt the acticmef 21.11of said e.

cemputingdiedds aecerding toiies positions,

means to hold said member iii] positidxmtq cause activity eiieaideompu'tiiig heads, and means to move endiholdisaid linemb er ineposition to interrupt the action efail of said a-i iyielding :means andthe other of said W18.The\cemhinatien Wither computing liemhnof a die-yfor iiren dermg sa d 00111- putinp; headtemporarily inactive,faf key13111130111113?IBVQTSHIg the a ctlOl'lwOi sand computing bee d, a thirdkey for TEIJ deriiig said computing heed iinaetive and another iIEVfOlreversi flieection of said comz: i v I 19JThe combination withji ecomputing head, of aizey for re n dering said computing heediemporarilyinactive, a key temporarily reversing the dG'LiOIJ. fei? said eom-"enderin g sand piibi lgheed wfh rd key fee computing heed inactive, amflier key Ff-011 reversing the action of saidcolhputingiheed, andaufenmtic docking means} for patching end holding said twelast-mentioned keys in citn said o king 1 brought 11 0 when through e lllitiligi head, He

one of said heads, one of isaid means being eeidheads,connections ofpower and sa d eempu 11g activity eiiddireetien f 1 i. means ectlngetias ngle EFF-SHOES derive vi ig the fillllQyfSU as to e i-j troi theactivity ii blnetiei with hn hikeyie for arying said Jeanne i of saidhceinputi n' heads i eqtiv lipf: P of all of said eonipi ting headseollectivel i t on livith 'ty 0 computingd1eeds,;; Of 1 a, source eziidheads, driving cqnne $011110, f rya d seid eei pi tin 11 ads, saiddrivngl hergmovahle to reverse OlliIl'lF-Qlfrupihfi bed: in position tocomputing heads, means for temporarily positioning saidmember againstthetendency of said holding meansto reverse the action of all ofsaidcomputing heads which are active, and means for detainingjsaid mem herso positioned to reverse the action of said active computing heads.

26. The combination with a plurality of computing heads, or a source ofpower for said computing heads, driving connections between said sourceof power and said computing heads whereby certain parts of saidcomputing heads may be driven from said source of power, said drivingconnections having means for reversal so as to concomitantly reverse theaction of said computing heads which are active, means for do tainingsaid driving connections in reversed position, a second means forreversing said driving connections, and means whereby saidfirst-mentioned reversing means may release said detaining means.

2?. The combination with a plurality of computing heads, each having atens carrying mechanism, of gearing for driving said. mecham'smsincluding indivldual rotation I controlling mechanisms for each oi saidtens carrying mechanisms, a source oi power, gearlng COHHQCtIDgSZLMlsource of power with said first-mentioned gearing, in-.

cluding shiitable clutching mechanism, a key for manipulating saldshiitable clutching mechanism to one position, and a key formanipulating said clutching mechanism to another position.v

28. The combination with a plurality of computing heads each having amaster wheel and tens carrying mechanism, of gearing for drivingsaidmasterwheels, gearing for driving said tens carrying mechanisms, each ofsaid gearings including means for controlling the drive of said wheelsand said tens carrying mechanisms, gearing for driv ing said first andsecond mentioned gearings, including a reversing and drive interruptingmechanism, and a plurality of keys for varying the effective actlon ofsaid last mentioned gearing.

29.The combination with a plurality of computing heads, each having amaster wheel and a tens carrying mechanism, of-

gearing for driving said master wheels including an individual means forcontroll ng the rotation of each of said Wheels, gearing for drivingsaid tens carrying mechanisms including individual means for controllingthe rotation of each of said tens carrying mechanisms, asource of power,gearing connecting said first and second mentioned gearings with saidsource of power, includ-v ,ing silencing mechanism, and a key forcontrolling said silencing mechanism.- I

30. The-comblnatlon with a plur'ality of computing heads, of gearing fordriving all of said computing heads, numeral keys for controlling the'eztent of drive of said computing heads, reversing mechanism fordetel-mining the direction of drive. of said gearing and said computingheads, and a plurality of keys for actuating said mechanism.

'31. The combination with a plurality of computing heads, of gearing fordriving all of said computing heads, numeral keys for controlling theextent oi drive of said computing heads, reversing mechanism fordetermining the direction of drive of said gearing and said computingheads, and a plurality of keys for actuating said mecha nism todifferent extents.

32. The combination with a plurality of computing heads, each having amaster wheehoft gearing for driving said master wheels, includingmechanism for governing the rotation and direction of rotation of saidmaster wheels, means manipulable at a single point for governing therotation and direction of rotation of said gearing, anda plurality ofkeys for actuating said means.

The combination with a plurality of computing heads, each having amaster wheel, or gearing for rotating said master Wheels, including anindividual changeable drive :l'or each 01 said master wheels, meansmanipulable at a single point for governing the rotation and directionof rotation of said gearing, and a plurality of keys for.

manipulating said means. e

3a. The combination with a computing head having a master wheel and tenscarrying mechanism, of a reversible gearing for driving said masterwheel, reversible gearing for driving said tens carrying mechanism,gearing for driving said first and second mentioned gearings, includinga pair of clutches shiftable to control the rotation of said first andsecond mentioned gearings,

and a plurality of keys, any one or which may shift both said clutchessimultaneously.

The combination with a computing head having a master wheel and tenscarrying mechanism, of a reversible gearing for driving said masterwheel, reversible gearing for driving said tens carrying mechanism,gearing for driving said first and second mentioned gearings, includinga pair of clutches shiittableto control the rotation of said. first andsecond mentioned gearings, and a plurality of keys, any one of which mayshift both said clutches simultaneously, some of said keys shifting saidclutches to different points than others of said keys.

36. The combination with a plurality of computing heads, each capable ofbeing in one of a plurality of states of adding, subtracting orremaining neutral or inactive,

of a plurality of numeral keys, gearing controlled by SttlCl numeralkeys so connected eb'the same time, means aforgchaplqging e011 suchheads as topsalid c omp uting heads that the severdl heacls!(Ban be inthesanie cliffereht stilt-es ticuleh instant, 23y teiflpqrhry reversingkey trolled b said 1111mm keys:

eqihpu izin means lnchv dual to each eqmput ng head a I revereing I keyfor operating said means.

137, The Ctgmbixmtion with afplumlity eomputmg heads, each capable ofbelng 111 Le said cemputing heady? the sefiera] he dsy can be m the same0 dlfierent states at the value ti; c 011 "talntly the Sm 11115 33 beadding; andsubtracting abany pg tiCillll? instant, a; temperaiy silejileing V silencing 01" opel'ming e. lclmtieans,

by eaid mm.

eomitailtlyj ma be addmg;

ersmg em means.

ding keye i" h st-lnehtioned ieversingf mechanism; 1

and e plurqlitjfef keys; fpncon trollingsaid lasbmentiqnedlIlEEChQlllSp}.

heads, of 1 1113 1111311j Operable fer eontrelling the 1 activity anddirection ofjnoveme nt of each beech amide pmmnw of Inmnuallymperablemeans (30111111011 '60 all of said heads for also controlling the actiwit? and djreetiori ef movement of all of said, eonip utlil g"headscollectively:said;indiyidg 1121.1 menuallyeperable means rheing j manipuf liable at any time independen 452, The geombination: with a eomputi ng mm for clmz ugiilg" don} ie of all of such heads 1d 2ppermanent d g e h ter, a re k 1 t p ra wlv arm, and a pliu ality bi keylever 50 Connected ..1 'theszune diifeient states al the same tune,means? for Q11Q11 g'1 11g Cont-ne etaiie of all; pl guchj e adsg asWing: the state of saicl computing-mead jin- :1 n tqrock; said lshaftand llmlify g a g d pint 00k :shaita em la d Shei reat r flmm iti fs d keyl s s x mm s o s lo ted a h gtermi iajti nx (1H Said can; edges and actig st o 1 lid rock shaft againet mqvemenfl ,f 1 4:5. The combination withc0: muting ltleadfpfycolitrolling meehanisqy 011} goverl ing tl ieetzitefqf said; (301111311 ng he-cpd in-flw I; eme in each Ofeaid ylevers f e13 hevi l ifis ow dafin e m efse id eamedgesiend @1112tolengzige saidpilieto 5 0e]; saig ofckshaft against movement.

47 Thecombination with 12L computing 1 gfhe stetelefjsaid computinghemd,means ylna nipjulating saicl cpntrollingf meC ha A W 1315111, fa:plurality if key levere fon pperetijng "lid meansma 13111011} ohe offszlidekeyy levers, tqslid rockl latches.

said latch from. said first-mentioned.

e8.'The comb1nat1on with a computing head, of controlling mechamsm for,governin g the state of said; computing head, means for actuating saidcontrolling mechanism, a

plurality of keys for operating'said means,

a pair of latches for locking a pair of'said keys in depressed,pOSllflOIl, a rock shaft securedto saidlatches, and a pair ofarms.

secured to said rockshaft and operable the others of said keys torelease said d9. The combination with a plurality of computingheads, ofa sourceof power, riving connections between said source of power andsaid computing heads whereby certain parts of all of said computingheads maybe drivenfr'om said source of power, said driv ing connectionshaving means for reversal and interruption, so as to concomitantlyreverse or' interrupt the action of all of said computing heads whichmay be acting, anda key for controlling said driving connections forreversal or interruption.

50. The combination with a computing mechanism, of a series of numeralkeys, means rendered effectlve thereby for controlling said computingmechanism, a series of depressible keys other than said-numeral keysto]: temporarily and permanently selectively controlling the state ofsaid computing mechanism, and means controlled thereby. .o

'51. The combination with a computing mechanism capable of existingunder-a" plurality of states as to adding, subtracting and remaininoneutral ofa airof he s means h 7 9 controlled thereby-for determiningthe same state of said computing mechanism, one of said keys enabling atemporary existence of said'computing mechanism in particular State, a dlocking means acting automatically to catch and hold the other of saidkeys in its actuated position, to maintain said computing mechanismsemi-permanently in a particular state. i

52. The combination with a plurality of computing heads, of anindividual controlling mechanism for each of said heads for governingthe state thereof, a'series of depressible keyscommon' to all'of saidheads, anduneans controlled thereby for temporarily and permanentlyselectively governing concomitantly the state of all of said heads.

5 53; The. combination with a plurality of,

computing heads capable of existing indivld-ually in various states, oftwo keys for controlling the state of all of said computing headscollectively, one'of said keys acting to neutralize the state and theother of said keys acting .to reversethe state'of' all active computingheads, two other keys for also controllingthe state of all of saidcomputing head collectively and in accordance with said first-mentionedkeys, and means acting through the medium of said second-mentioned keysfor preserving the respective states asdetermined by either of saidfirst mentioned or said second-mentioned keys.

5%. In a computing machine, the combination with a plurality ofcomputing heads, of a shaft, controlling means on said shaft for each ofsaid computing heads to determine the state thereof, means for impartingmove ment to said shaft, and means forsilencing said shaft and thereby.all of said computing heads.

55. In a computing machine, the combina -tion with a plurality ofcomputing heads, of

a shaft, means for imparting differential movements to said shaft, meanson said shaft connecting said shaft and each of said computing heads fordetermining the state of said-heads asto addition orsubtraction, and

. means for silencing said shaft and thereby all of said computingheads.

'56. In a combined typewriting and com puting machine, the combinationwithinvcrsing and disconnectingmeans, of depressible keys fortemporarilyand permanently controlling said reversing and disconnecting, and asingle shaft for all said keys whereby they are effective.

57. In a computing machine, the combinat1on of a plurality of computingheads, a

source of power, a shaft between said SOurCe of power and said'computingheads, controlling means on said shaft for each of said computing headsto determine the state thereof as to additlon or subtraction, and meansfor interrupting the connection be tween said source of power and saidshaft to thereby silence all of said computing heads. p 58.'Thecombination with a plurality of computinghcads, of'a source of Power forsaid heads, driving connections between said source of power and saidcomputing heads,

saiddriving connections including a member movable to differentpositions so as to reverse or interrupt the action of all of saidcomputing heads according to its positions, means normally tending tohold said memher in position to cause activity of said computing heads,means for temporarily positioning said member against the tendency ofsaid holding means so asto reverse the action of said computing headswhich are active, means for detaining said member in said reverseposition, and means brought into'action by said temporary-positioning Imeans acting, to render nugatory said detraining means.

59. The combination with a plurality of computing'heads, of a source ofpower for said heads, driving connections betweensaid source'of powerand said computing heads, a

point, and at key adapte i computing-heads of e so urjce oi saidheads,driving connections be Ween said source oflpower and sand CQIHPUJCJJQQheads,

berniovelble to ditfelrentpositions, sees to I reverseor interrupttheaction of all of "said computing heads accordir means normally tendingmhoiclsaidmem;

1 her in posit-ion to cause activityoi said coniputing heads, means totemporarily position said member against the teiidency of ,sfli lholding meansto interrupt the action o-fij all f tendency of saidholding"vmezil sgto reverse the actiolrof said comput HzT11e combinationwith in Computing enoyqof said holding means to moi e we hold saidmember inpositionto interrupt ftion of sztiti eoinputing heads which arevii-o twe, sald. temporarily inteyruzpting rile-t ns 1 ing meohanishghfa reversible for driv- 111;: said i master WhGi-llf reversible gearingfor driving smdfitens-ciirn 111g1i1ec1i m1sni,

mentioned gee-rings including av pair of said driving it connectionsiiioludi'ng: a mm- 3 of saidjejon puting heads, means to temperrari1ypos1t1on 831d; member against the heads: which are actlve meaiis;acting againstvthe tend the action 1; of all of said coli puting heads,and means acting against the tendency of all saidliolclingdiieans to liovevond hold said me nbei' iii position to reve isethe :ie-

and said tempoi'arilyweve 'siilg means (i-01L iiig means and saidreversing-11o] ding means.

head having a: masteiwwheel and tens-carry;

gearing for driving said rst zmd second clutches sliii 'tableto.eoiitroliltl e otationot nationlwith two eom auting heads endmeaiismanually settable to separj; howsaid heads $113111 be efli'eeti e, .of asinglg shaft fontcontrollin g both said heads simuL 1 taiieou slv, 11and a plurality] of keyswefi'eotive 011 saidshiaft reverse o interrupt:the it computing headsgaeoordm g towits positions;

position to interriipt theeetijoii of 3 all ofsaijcl said first andseeond mentioned gearings; a: keyadaptedfto,lshift s2 1ciflo1iitohes toone d to Isiiift said clutchesto anothei dpoint.

61. In a computliig iimjciii ne, the combi-l 62wThe combiriationiii it apl iralitji o Power 51 011 saicl di li ngeonneotions; inoludiiig 2imember movaibleto diiferentg pjosltlonsgso as i to on of all of so-1means to yielclingly iioldysaid memberin position to cause aetivity ofsaici computing heads, means to move z ndlock salt} member against theactioniof said wielding means i computing hezl dsmnd mezinsitotemporarily i of all active computing heads; saici lasttrolofx saidmemberand holding it in the position towhichyit has been moved whenposition 1 saith member against the action o -15 Sald yielchng means tointerruptwthe act on computing hea sald heads, dim

computing:hesids, of afsouree of power for said heads, drivingconnectionshetweeiisaid soureel ofpower oridtsa id computing heads, 1said drivingeon iectionslii cliidingwameme? her inoveble to Iciifferentpositioiis, so M; to f "computingi ea tis occordinglto itsfpositionmeans to yield i gly hold said member heads, means to move 1 andlookcsziicl ineliiben 63. Thefcoinbiiietioii with jaifpluravlityfof ofaso iree ofupowei-kforl 1 g connectionsbetiveensaici source of power andsaicl computing 'hearls t said dLi ing connect-ionsincluding Ya H1813 Ijbelf movable to(liifere itfpositions;[so asto I fre verse or interruptthe action Of iili of said computing heads according to its positions;means to hol fceusefaetivity of sz id computing lieadgsm means tomoveand holdsaidqmember in poit sition to reverse the state ofietctivityof said id; iember;

position t 'seor interruptthe actionof e11 of said; i

means to hold saitt me ber in position toi 9O "use actn ityof sad"eoinputmgljliieads, and

means tolmoifefaiidhold said meinberiin ag i position tofireverse the,zietioni of all of Saki i flOfilpl l tilig hezi cis 1 which; ar 1 laesaid means being ajyieldi ig means and the;

locking means.

i 65. The eombinationi 1th reverse or interriqat the action of in ofsaid position to jCaUSG activity of i said competing wgainstti ltheFaction ofwsaid yielding means i i i! position to reverse the action: ofalliofdj against the action of saidjyie1dingnieansto 1 IEVETSBWthGELG'CiOIi of heads which I are actiygsai st-mentioned positioning"mezuns taking :jcontrol ofxl said kill ; saint computing 115 member jand holding it ilijtliepositioii tor l i Whieh his been imovedui wherunder the influence of said lock nguinea ns and acting ins,

in'a position so as to interrupt the action of all of saidcomputing.headspand means for moving and holding said member in a position toreverse theaction of allof said computing heads that are active. 67. Ina combined typewriting and computing machine, the combination with amechanism adaptedto subtract andto print, of a key eli'ective to causesaid mechanism'to add, a latch adapted to holdsaid key eliec" tive whendepressed, and a second key similarlv effective andadapted to releasesaid first-named key when operated. I i

68. In a computing machine, the comz-inw tion with numeral keys andstate-controlling keys effective to control the state of the computingconnections, of separate latches for said state-controlling keys, and asingle shaft universal .to saidlatches to, release 69. The combinationwith a plurality of computing headset a source of-power for said heads,driving connections between said source ofpo wer and said computingheads,

said driving connections including a member movable to different;posltions so as to reverse or interrupt the action of all of saidcomputing heads according to its positions;

means for positioning said member so as to reverse the action of allol'flsaid computing heads, a second means for positioning'said memberso' as to reversethe action of all of said computing heads, and meansbrought into action on movement ofs'aid second-mentioned means, to holdsaid member as positioned by eitherot said lirstor secondmentionedmeans. i v

70. The combination with a plurality of computing heads, capable orexistingindividually in various states,of means for con trolling thestate'of all ofsaid computing heads collectively, a second means forcontrolling the state ofall of said computing heads collectively, andmeans brought into action througrh'the mechumof said secondmentioned'means, for preserving the states as determined by either of saidlirstor seeond-mentioned means. I s

71. The combination with a plurality of computing headsioi' a source ofpower for I said heads drivinrr connections-between said source of powerand said'computing heads, said driving connections including, a memhermovable to different. positions so as to reverse or interrupt the actionof all of said computing heads according to; its positions;

means normally tending to hold said member in position to produceone'state or said 1 computing heads, means forpositioningsaid member againstthe tendency of said holding meansto vary the state: of saidcomputingheads as determined by'said first-mentioned means, another means 'foralso positioning sald member against the tendency of said holdingmeansto vary the state of said computing heads as determined by saidfirst- I mentioned means, a detaining means brought into action throughthe medium of said lastmentioneu means'to detain said member asposltioned by either of said first or secondbrought into action throughthe mediumof SELlCl second-mentioned positioning means to renderineffective said detaining means to thereby restore said member to theaction of said holding means. x

72. The combination with a plurality of computing heads, or a source ofpower for said heads, driving connections between said source of powerand said computing heads, said driving-connections including a membermovable to difierent positions so as to reverseor interrupt the actionof all of said computing heads'according to its positions; meansnormally tendin bar in position to cause activity o'lt' said computinirheads, means for temporarily positioning said memberagainst' thetendency of said holding'means to reverse the action of all of saidcoinputing heads which areactive. and means for movingand deraining:said member in position to reverse the action of SEHCl computmg heads.

73. The combination with .a plurality of computing heads, of a source ofpower for said heads, driving connections between said source of powerand said computing heads, said driving connections including a membermovable to different positions so as to reverse or' interrupt the actionof all of said computing heads according to its positions; means formoving said member to a position so as to interrupt the action of all ofsaid computing heads, and means for move inn said member to a position.to reverse the action of all of said computing heads which are active.1 p

' 7%. T he combination with'a plurality of a to hold said mem-'mentioned positioning means, and means computing; heads, of .a sourceof power for said heads, driving connections between said source "ofpower and said computing heads. said driving connections including amember movable to different positions so as to reverse or ilmierrupt theaction. of all of said computing; heads according to its positions:means normally tending to hold said member inposition to cause activityof said computinaheads, means for temporarily positioninr; said memberagainst the tendency of said holding means so as to interruptthe actiono'f'all of said computing heads, and means forinoving andholdingsaidmember in position to reverse the action of all oi said computlngheads which are active. I i i 75. The combinationwith a plurality ofcomputing heads, of a source of power for said heads, drivingconnections between said

